End train-pipe valve.



PATENTED MAR. 22, 1904.

R. M. 111x011. END TRAIN PIPE VALVE,

APPLICATION FILED. OUT. 27, 1902.

no monizL.

of the valve structure.

Patented March 22, 1904.

UNITE STATE PATENT OFFICE.

ROBERT M. DIXON, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO THE SAFETY CAR HEATING NEW JERSEY.

& LIGHTING COMPANY, A CORPORATION OF END TRAIN-PIPE VALVE.

SPECIFICATION forming part of Letters Patent No. 755,284, dated March 22, 1904.

Application filed October 2'], 1902.

To all whom it may concern:

Be it known that I, ROBERT M. DIXON, a citizen of the United States, residing at East Orange, in the county of Essex and Stateof New Jersey, have invented certain new and useful Improvements in End Train Pipe Valves, of which the following is a specification.

My invention relates to valves primarily adapted for use as end train-pipe valves, and has for its object to produce a valve which may be readily seated and which will operate with a minimum amount of resistance.

In the accompanying drawings I have shown details of one form of valve in which my invention is embodied.

In the drawings, Figure Iis a broken-away sectional plan view of the valve structure. Fig. II is a sectional side elevation of the said valve, and Fig. III is a detail underneath view In the drawings, a indicates the valve-casing, provided with a seat 6, shown in the present instance as a concave seat. A bracket or other suitable support 0 is provided to'aid in supporting a valve-spindle d, which valvespindle passes through a gland e on the side of the valve-casing. The valve f, which cooperates with the valve-seat, is in the present instance convex and ground to fit the valveseat and is provided with the notch or driporifice g. The object of so shaping the valve and its seat is to bring about a self-seating or centering action by the cooperation of the two parts, and to this end other centering means may be. usedsuch, for instance, as by giving a taper to the valve and its seat.

The valve f is provided with a yoke h, which fits loosely upon the valve-stem d, so as to be capable of moving freely thereon, and the Serial No. 128,920. (No model.)

valve is also provided upon its rear face with an apertured lug i, which aperture receives an arm j, carried upon a collar is, turning with the stem d.

Any suitable form of handle may be employed, and for the purposes of illustration I gave shown a broken-away portion of a han- The valve is especially adapted for end trainpipe construction, the stem entering the valvechamber through a packed joint. There is little or no steam-pressure exerted upon the moving parts to impede their action, so that the valve may be turned with the greatest ease,

and as it approaches its seat will be closed down by the steam-pressure, the lost motion between the valve and its stem permitting sueh independent movement.

The valve has the further advantage that it may be very readily removed, it being merely necessary to take out the plug on and remove the cap 0, and the valves may then be withdrawn and the operating parts of the valves removed from the side of the valve-casing.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

In an end train-pipe valve the combination of a valve-casing a having therein a concavefaced seat I), a bracket or support 0 located within the valve-casing, a valve-spindle d passing through the support, a convex-faced valve f combined with a notch ordrip-conduit at its edge and IIIGELIIS'IEOI operating the valve from the exterior of the valve-casing.

R. M. DIXON.

Witnesses:

FREDERICK E. KESSINGER, ELMER' E. ALLBEE. 

